Your first lookup

What you can search, why a cold lookup is slow, and why the second is instant.

subnethistory.com and the API return the same report. No account, nothing to install.

What you can search

IPv6 input is normalised. Looking up a single address returns address level facts plus its covering block; look up the block itself for its history.

Run your first lookup

Search on the site. The API returns the same report as JSON, with no key:

curl "https://subnethistory.com/api/v1/lookup?q=8.8.8.8"

First lookups take longer

A cold lookup can take about 30 seconds; repeats come from cache in milliseconds. A partial report sets meta.partial and says how long to wait in meta.retryAfterMs. The streaming endpoint emits progress instead.

Where next

Reading a report and the API reference.